I haven't had a landline since 2003. For my cell service, I signed up for a Google Voice number when they were first offered, and I am still using it to this day as my primary number. (I do not give out my "real" cell number that I use with Google Fi, so I can change carriers and not worry about them owning my number, like the shit Verizon pulled on me years ago.) I also have a couple other Google Voice numbers for business usage. There are a couple of ways I can use the number but for now, I use the Google Hangouts dialer if I need to make the rare phone call.
But how does that translate to home use? There is an adapter out there that will connect to the Internet and give you a VoIP connection that you can plug a phone or fax into, which works with a Google Voice account. It is available in both 1- and 2-port versions. Google Voice is free, no monthly charge, no extra fees for calls unless they are overseas (US/Canada are all free calls). I've liked their spam filtering and call blocking features, and voice mail can be read online (it will translate speech to text) if one chooses.
I realize it's not for everyone, but it has worked well for many years with me. It's just another option to consider.